SGDeviceIdentifier.h

//
//  SGDeviceIdentifier.h
//  Elements
//
//  Created by Justin Williams on 9/28/12.
//  Copyright (c) 2012 Second Gear. All rights reserved.
//

#import <Foundation/Foundation.h>


@interface SGDeviceIdentifier : NSObject

+ (NSString *)deviceName;
+ (CGSize)deviceBackCameraResolution;

@end

SGDeviceIdentifier.m

//
//  SGDeviceIdentifier.m
//  Elements
//
//  Created by Justin Williams on 9/28/12.
//  Copyright (c) 2012 Second Gear. All rights reserved.
//

#import "SGDeviceIdentifier.h"
#import <sys/sysctl.h>

@interface SGDeviceIdentifier ()
+ (NSString *)devicePlatform;
@end

@implementation SGDeviceIdentifier

+ (NSString *)deviceName
{
    NSString *platform = [[self class] devicePlatform];
    
    NSRange phoneRange = [platform rangeOfString:@"iPhone" options:NSCaseInsensitiveSearch];
    NSRange tabletRange = [platform rangeOfString:@"iPad" options:NSCaseInsensitiveSearch];
    if (phoneRange.location == 0)
    {
        return @"iPhone";
    }
    else if (tabletRange.location == 0)
    {
        return @"iPad";
    }
    else
    {
        return @"iPod touch";
    }
    
    return @"";
}

+ (CGSize)deviceBackCameraResolution
{
    NSString *platform = [[self class] devicePlatform];

    if ([platform isEqualToString:@"iPhone1,1"])    return CGSizeMake(640,480); // Original
    if ([platform isEqualToString:@"iPhone1,2"])    return CGSizeMake(640,480); // 3G
    if ([platform isEqualToString:@"iPhone2,1"])    return CGSizeMake(2048,1536); // 3GS
    if ([platform isEqualToString:@"iPhone3,1"])    return CGSizeMake(2592,1936); // 4
    if ([platform isEqualToString:@"iPhone3,2"])    return CGSizeMake(3264,2448) // Mystery 4!
    if ([platform isEqualToString:@"iPhone3,3"])    return CGSizeMake(3264,2448) // VZW 4
    if ([platform isEqualToString:@"iPhone4,1"])    return CGSizeMake(3264,2448); // 4S
    if ([platform isEqualToString:@"iPhone5,1"])    return CGSizeMake(3264,2448); // 5 GSM
    if ([platform isEqualToString:@"iPhone5,2"])    return CGSizeMake(3264,2448); // 5 CDMA
        
    if ([platform isEqualToString:@"iPod1,1"])      return CGSizeZero; // iPod 1g
    if ([platform isEqualToString:@"iPod2,1"])      return CGSizeZero; // iPod 2g
    if ([platform isEqualToString:@"iPod3,1"])      return CGSizeZero; // iPod 3g
    if ([platform isEqualToString:@"iPod4,1"])      return CGSizeMake(960,720); // iPod 4g
    if ([platform isEqualToString:@"iPod5,1"])      return CGSizeMake(2592,1936); // iPod 5g
    if ([platform isEqualToString:@"iPad1,1"])      return CGSizeZero; // iPad 1

    if ([platform isEqualToString:@"iPad2,1"])      return CGSizeMake(1280,720); // iPad 2 WiFi
    if ([platform isEqualToString:@"iPad2,2"])      return CGSizeMake(1280,720); // iPad 2 GSM
    if ([platform isEqualToString:@"iPad2,3"])      return CGSizeMake(1280,720); // iPad 2 CDMA
    if ([platform isEqualToString:@"iPad2,3"])      return CGSizeMake(1280,720); // iPad 2 CDMA
    if ([platform isEqualToString:@"iPad2,3"])      return CGSizeMake(1280,720); // iPad 2 CDMA
    if ([platform isEqualToString:@"iPad2,4"])      return CGSizeMake(1280,720); // iPad 2 New GEn

    if ([platform isEqualToString:@"iPad3,1"])      return CGSizeMake(2592,1936); // iPad 3 WiFi
    if ([platform isEqualToString:@"iPad3,2"])      return CGSizeMake(2592,1936); // iPad 3 CDMA
    if ([platform isEqualToString:@"iPad3,3"])      return CGSizeMake(2592,1936); // iPad 3 GSM
    if ([platform isEqualToString:@"iPad3,4"])      return CGSizeMake(2592,1936); // iPad 4 WiFi
    if ([platform isEqualToString:@"iPad3,5"])      return CGSizeMake(2592,1936); // iPad 4 CDMA
    if ([platform isEqualToString:@"iPad3,6"])      return CGSizeMake(2592,1936); // iPad 4 GSM

    // iPad mini
    if ([platform isEqualToString:@"iPad2,5"])      return CGSizeMake(2592,1936); // iPad mini CDMA
    if ([platform isEqualToString:@"iPad2,6"])      return CGSizeMake(2592,1936); // iPad mini CDMA

    if ([platform isEqualToString:@"i386"])         return CGSizeZero; // Sim
    if ([platform isEqualToString:@"x86_64"])       return CGSizeZero; // Sim

    return CGSizeZero;
}

#pragma mark -
#pragma mark Private/Convenience Methods
// +--------------------------------------------------------------------
// | Private/Convenience Methods
// +--------------------------------------------------------------------

+ (NSString *)devicePlatform
{
    size_t size;
    sysctlbyname("hw.machine", NULL, &size, NULL, 0);
    char *machine = malloc(size);
    sysctlbyname("hw.machine", machine, &size, NULL, 0);
    NSString *platform = [NSString stringWithUTF8String:machine];
    free(machine);
    return platform;
}

@end